Self-Lubricating Behavior of ZrO₂(Y₂O₃)-Mo-CaF₂-Graphite Composite

Abstract:

t is of great importance to find ways to lubricate ZrO₂ceramic. In this paper, a kind of ZrO₂ matrix high temperature self-lubricating compositewith addition of CaF₂ and graphite as lubricants was prepared by hot-pressing. It was found that the tribological properties of ZrO₂(Y₂O₃)-CaF₂-graphiteshow a good tribological behavior both at low temperature and high temperatures. The low friction coefficients of ZrO₂ (Y₂O₃)-Mo-CaF₂-graphite at high temperatures were due to the perfect lubricity of CaMoO₄ which was formed on the worn surface at high temperatures.

• Periodical: Advanced Materials Research (Volume 815)
• Pages: 584-587
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.815.584
• Online since: October 2013
• Authors: Ling Qian Kong, Qin Ling Bi, Sheng Yu Zhu, Wei Min Liu
• Keywords: CaF₂, Graphite, Self-Lubricating, Tribological Behavior, ZrO₂ (Y₂O₃)

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